Are you saying that the French language as a whole is a surprising cognate, or was this simply a typo?

Shemtov originally used the Quebec flag for the French language, saying they couldn't find just the flag of France. I think Shimobaatar was saying we do have one. OP's been edited now so there's no context

You can tell the same lie a thousand times,
But it never gets any more true,
So close your eyes once more and once more believe
That they all still believe in you.
Just one time.

Are you saying that the French language as a whole is a surprising cognate, or was this simply a typo?

Shemtov originally used the Quebec flag for the French language, saying they couldn't find just the flag of France. I think Shimobaatar was saying we do have one. OP's been edited now so there's no context

Bingo. I should have quoted what the flag was in response to, but for some reason it didn't occur to me that the context might be edited away later.

This might not be exactly what you were looking for, but I was pretty surprised to find out that Chinese languages had any cognates with European languages other than perhaps the word "China" dating back to any earlier than the past century or two. As it turns out, there are (possibly) at least two:

(Using the Mandarin pronunciations, though these characters primarily appear in compound words in Mandarin rather than as words on their own)

You can add Indonesian kepala, (also from Sanskrit) which is not suprising because is has a different meaning (It also means head.), but because it looks like an Indonesian word, it doesn't look like 'head' and because I still find borrowing of body parts a bit crazy (I know, a lot of European languages did it, though.).

This is theoretical, but Shekel (the Israeli currency) and Scallion are related. Shekel comes from the Semitic root ʃ-q-l "To weigh", meaning "Weighable currency" while Scallion comes from Latin <caepa Ascalonius> "Ashkelonian Onion" and "Ashkelon" probably means "the city of weighing", also from ʃ-q-l , given its ancient status as a center of trade

Many children make up, or begin to make up, imaginary languages. I have been at it since I could write.
-JRR Tolkien

Baphomet and /ħɛmdaθ jɔmijm/ (Tiberian) /xɛmdat jamijm/ (Israeli) /xɛmdas jɔmijm/ (Ashkenazi) "Lit. [Most] Desired of days; A poetic title of the Sabbath". Baphomet seems to be a corruption of Arabic Muḥammad, whom the crusaders falsely believed was a Demonic "Islamic Deity" and Muḥammad comes from the Semitic root ħ-m-d "Desire" as does /ħɛmdaθ jɔmijm/.

Many children make up, or begin to make up, imaginary languages. I have been at it since I could write.
-JRR Tolkien

English fraught and freight are cognate. They both ultimately come from Middle Dutch vracht/vrecht. It seems as though fret (in the sense of a marker on a guitar) may also be connected, through French. But I get conflicting answers on its etymology.

kheia “to fall” as well as geheien “to throw” are cognate with huwen “to marry”, from *hīwijaną “to marry”. No cognate in Standard German that I am aware of, and the English cognates have also fallen out of use. This comes from a sequence of pretty wild semantic shifts that can be traced in old documents between Old High German (where it still meant “marry”) and the modern varieties and it goes something like this “to marry” → “to copulate, fuck” → “to rape” → “to plague” → “to hit” → “to throw” (→ “to fall”), all within about a millenium at best. Luxembourgish seems to accept some of the older semantic variants still, whereas in Swiss German (read: at least in my dialect) it prototypically definitely means “to fall” but can be used as “to throw” when used with some adverbial of directionality.